Sound box



Dec. 26, 1922. 1,439,981.

. c. H. SHAW.

SOUND BOX.

FlL-ED JULY 3,1918.

INV NTOR M w:

. V ATToNEY Patented lien. 26, i922.

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ona'enns straw, or BABYLON, new roan, Assrenoa T0 was shorten COMPANY,

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scum: BOX.

Application filed. July 1-918. Serial No. 243,142.

T0 all whomitmay concern: l H

Be it known that I, CHARLES H. SHAW, citizen of United States, residingat Baby- 1011, Long Island, State of New York, have invented new anduseful Improvements in Sound Boxes, of which the following is aspecification. W n My present invention relates to a universal sound-boxadapted to play with minimum adjustment both the lateral and hill.-and-dale type of sound-records. v

i In the drawings in which I have shown only one of the specificembodiments my invention is adapted to take :Fig. 1 is a side-elevationof a sound-box within my i11- vention shown on a tone-arnn the fulllines showing it in playing position, the dotted in out-of-playingposition Fig. 2 is a sectional view of said sound-box, partlyiinelereceives the neck of thesound-boxvation, on the line 2-2 in Fig. 1looking in the direction of the arrows; Fig. 3 .is an underneath planView of the box asviewed from the arrows in Fig. 2; Fig. 4:ilS a crosssectional view through the neck otthe sound-box and tone-arm on the line4. i in Fig. 2 looking in the direction of the arrows; Fig. 5is asimilar cross-sectional view through the neck of the sound-box andtone-arm exceptthat it shows a slot and set-screw "form ofconnecting-means between the twoparts; and Fig. '6 is an elevationalview of said parts and modified form of connecting means shown in Fig.5. i

I will now describe the illustrated specific embodiment of my inventionincludingthe tonearm:-l is the elbow of the tone-arm swiveling about avertical axis A-A and is to this end operatively supported in any wellknown manner in the stationary flanged-sleeve-with-bracket member 2. 3is the. middle-section of the tone-arm which is pivotally supported on apair of horizontalpivot's or trunnions from the elbow 1,.

one of said pivots being indicated at 4 in Fig. 1. 5 is the free-endsection of the tonearm, one end of which has a rotary fit in the mouthof thetube 3, whereas its other end This end-sectionfi isbent so as tobring the diaphragm and stylus in proper relationship to the record. InFig; 1, "the'proper playing relationship of said parts to the recordisshown by the full lines. When out of play, the sound-box andend-sectio1l 5 are twisted into thedotted. position shown in Fig. 1.

,The endsectio'n 5 ismaintained rigidly in either of its said positionsof rotation in themiddle-section 3 by a spring-pressed pin 6 projectingthrough ahole inthe section 3 and seatingitselt in holes or recesses inthe end-section 5 suitably positioned for the purpose; 7 istheleaf-spring whose-free-end voperatively supports this pin 6 and whose ofbody t), diaphragm 10, gaskets lll1,

and gasket retaining ring 12; I 13 is a stylus-holder havingathuinbscrew-14 for securing the. stylus or needle 15, in any usualsocket in the end. of the holder. The stylus-holder withits needle islocated inltront' of the diaphragm with its longitudinal axis atright-angles thereto and in line with the center ofthe diaphragm. It isoperatively supported in this position in a stationary ring 16 which'isitself supportedifrornthe face of the sound-. her; on the legs of thespiderlT- I The stylusholder13has 'trunnions 1818 (best shown in Fig.engaged by pivotscrews 19-19 which pivotally supportsaidyholder in thering 16. 19 is alinkipivoted at one end. to the upper end of thestylus-holder 13 and at the other end toione arm of an elbow-lever 20,whose other arm has a bent-foot which is secured toathe center of thediaphragm. This elbow-lever is pivoted at 21 (F ig; E2) to the rim ofthe sound-box.. More specifically, 22 is a piece screwed to theperiphery of the sound-box having a pair of spaced lugs 23 23 projectingbeyond the face of the hon. These lugs support the pivot screws 21 2lwhose points engage the enlarged sides of the elbow-lever 20 and therebypivotally supportsaid lever.

sort lotvibration delivered by ;a laterahcut i record to the stylus; andFig. .1 shows the sound boxf adjusted to play. this type of record; thepivot 21" of theelbow-lever 20 in said figure, being at the edge-of thesound-boxnearestthe observer.

Now to adjust the soundhoxtosplayhill and-dale records, it is merelynecessary to rotate it about its own axis through about 90 so that thepivotal axes 19 and 21 respectively of the stylus-holder.13Zand:elbo\v.--

lever 20 are now transverse to the longitudinal axisof thetonei-arminstead of lengthwise. The result of this simple, rotaryadjustment ot the box is that 'up-anct down vibration delivered tothe-"sty1us :in following a hill-and dale; record produces an in-and-outvibration of the diaphragm.

24 (Fig: 2) isa spring located between.

the face of the sonn'deldoX -and the diaphragm-arm of theelboW-lever20*to give the diaphragmpreferably acsli'ght' normal tension in onedirection.

'The" means for "permitting this -rbtary ad:- justment issas follows:-25'=(Figs. 2 and 4: is the usual= flanged neclr secured to the backofthe' soundbox concentric with the sound opening through said back,except thatinstead of -bein'g'fixed as usual in the mouth of theend-section of the tone-arm, it is rotata ble therein: through "90 an dback again.- Means for releasably looking it in either of itsadjusted"posit i'ons is provided consisting of a spring-pressed pin 26(Fig. 4-) on the freeend offthespring 27' project'- ing freelytlirougha-hole in the wall of the ne'c'lr '25?into suitalily placed 'recesses27- 27 on the inside Wafll ofthe tone amn section "of this rotaryadjustment and fastening means, wherein a-T-shap'ecP slot 29 is suit- 5,the leafisprin gET being attached at 28- to said neck 25! Figs: 5 andG'shoW merely a modification ably provided in'tha tone-arm section 5 tocoo'peratewith the stem of thumb-screw "30tl'1readedFinto the neck 25. IThe stempo'rt-ion ofthe T -shaped slot permits the stem"of"thathumdscrew to pass in applying and: removing "the sound box toandfrom the tone-arm, whereas the liead por-tion of slot permit'sthe'desired extent of rotation of the boxonlth'e end oi tlietone-arm toadjust it tofplay one type of record or the other. Tightening thethunibnut 30"lo'cks the Lox in the desired adjustment.

sound box plays each typeof record "exceliently.

Of. course modifications are I possible which will still be" withiirtliespirit ofmy invention. I

That I claim is: y p

11. A sound box comprising a: diaphragm,

"a laterally'vi'bratab'le intermediately' pivoted holder operatively'supported in front of the 'faceroif' the diaphragm and havmg its innerend "disposed adjacent and stylus holder;

transversely to the central portion of. the

diaphragm, and .means for delivering the vibrations of the stylusholderto the diaphragm-embodying an elbow-shaped stylus bar, theintermediate portion of Which is pivotedl to the sound box and one armof which is attached to the diaphragm, and a linkroperatively connectingthe other arm of the stylus bar to the inner end of the 2. A sound boxcomprising a diaphragm, a laterally vibratahle 2interinediately;pivotedstylus holder operatively supported in front of the central portion ofthef'ace oi the diaphragm and extending transversely thereto; anelbow-shaped stylus bar pivoted atthejunot-ion oh its arms, the tree endoii one arm being attached to the diaphragm, and a: link operativelyconnectedtokthe' inner end o'f the stylus holder and to the other armofthe'stylus bar; l a

3. A soundbox comprising a'diaphra'gm,

a-spider arrangedopposite'to the diaphragm and having an aperturedringand' radiating arms attached to the-periphery of the sound box, alaterally vibratablestylus shaped stylus bar pivot-ally supported at aninteiimediate point on the periphery of the sound-hon, one arnroi saidlever being 0p eratively' related to the diaphragm and the other: armextending iron 1 the b ox-in a direc- 'tion transversely ottthediaphragm, the pivoting 'axeso i the stylus-holder and-01 the-stylus harbeing 'suhstantiailyparallel, and a linkextendingirrsubstuntialparallelism with the plane ot thediaphragmoperatively connecting said transverse arm oithe stylus barwith: the end of thestylus-holder nearestthe diaphragm.

' 5. A sound'boz comprising diaphragm. spider arranged opposite to thediaphragm and QOIHPFlElH an'apertured ring located in alinement with.andopposite-'to the central portion of'thediaphragm, and arms ex-'tendingfrom the rin to the periphery of the sound box, a sty usholder;extending longitudinally through the aperture in the :ring of thespider, a transverse pivotsupporting the stylus, holder for vibrationlaterally Within the aperture of the 'ring, a stylus bar 'operativelyrelated? tothe diaphragm,

thereto, 2L support for said stylus-holder perinitting it to pivot aboutan intermediate point of its length, and an elbow-shapecll stylus barpivotally supported at a point intermediate its length on the peripheryof said box, one arm of the stylus bar hein operzztively related to thediaphragm me its other arm beingopemtively connected with the inwardlyextending end of the stylus holder which is nearest the diaphragm, thepivoting axes of 631dStylIIS-lIOlClGl and sty 'lus bar beingsubstantially parallel;

In testimony whereof, said CHARLES H. bIiAW, has signed his name to thisspecifica- 'tion, this second day of July, 1918 'oHAs. H. SHAW. f

